######################################
# target
######################################
TARGET = Template

######################################
# platform
#   WIN/LINUX
######################################
PLATFORM = WIN

######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og

#######################################
# paths
#######################################
# Build path
BUILD_DIR = build

######################################
# source
######################################
# C sources
C_SOURCES =  \
Src/main.c

# ASM sources
ASM_SOURCES =  

# ASM sources
ASMM_SOURCES = 

#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
GCC_PATH = E:/sofeWare/GCC/gcc-arm-none-eabi-10.3-2021.10/bin
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
OD = $(GCC_PATH)/$(PREFIX)objdump
else
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
OD = $(PREFIX)objdump
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S

#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m4

# fpu
FPU = -mfpu=fpv4-sp-d16

# float-abi
FLOAT-ABI = -mfloat-abi=hard

# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)

# macros for gcc
# AS defines
AS_DEFS = 

# C defines
C_DEFS =  \
-DDEBUG

# C includes
C_INCLUDES =  \
-IInc

# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif

# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"

#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = GD32F42x_APP_Flash.ld

# libraries
LIBS = -lc -lm -lnosys 
LIBDIR = 
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections

all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin

#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASMM_SOURCES:.S=.o)))
vpath %.S $(sort $(dir $(ASMM_SOURCES)))

$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@

$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@

$(BUILD_DIR)/%.o: %.S Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@

$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@

$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(HEX) $< $@
    
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(BIN) $< $@    
    
$(BUILD_DIR):
	mkdir $@        

#######################################
# disassembly
#######################################
disassembly: $(BUILD_DIR)/$(TARGET).s

$(BUILD_DIR)/%.s: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(OD) -D $< > $@    

clean:
ifeq ("$(PLATFORM)", "WIN")
	rmdir /s/q  $(BUILD_DIR)
else
	rm -rf  $(BUILD_DIR)/*
endif



